Hinge-seat cutter.



W. E. FRANKLIN.

HINGE SEAT GUTTER.

APPLICATION FILED JULY 3o, 1910.

Patented Nov. 5, 1912.

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WILLIAM E. FRANKLIN, OF DALLAS, TEXAS.

HINGE-SEAT CUTTER.

Specification of Letters Patent.

Patented N ov. 5, 1912.

Application iled July 30, 1910. Serial No. 574,610.

To all lwhom it may concern:

Be it known that I, WILLIAM E. FRANK- LIN, citizen of the United States, residing at Dallas, in the county of Dallas and State of Texas, have invented certain new and useful Improvements in Hinge-Seat Cutters, of which the following is a specification.

My invention relates to new and useful improvements in woodworking tools.

In putting up doors and shutters it is necessary to cut apertures in the same and upon the posts upon which they are mounted so that the hinges may be made flush with the surface in which they are set. In the present practice the carpenters cut out these holes with an ordinary chisel, a process re* quiring considerable time and skill.

It becomes the object of this invention, therefore to provide a wood working tool adapted to cut out these rectangular apertures in doors and door posts with greater speed and accuracy than is at present possible.

The object of the invention is more speciically to provide a frame in which are mounted a number of chisel blades which occupy the proper relative positions in said frame to cut out a hinge aperture, it being possible to adjust the length and width of the frame according to the size ofthe hinge aperture required. V

Finally the object of the invention is to provide a device of the character described that will be strong, durable, simple and efficient and comparatively inexpensive to construct, and also one that will not be likely to get out of working order.

With these and various other objects in view, my invention hasrelation to certain novel features of construction and operation, an example of which is described in the following specification and illustrated in the accompanying drawing, wherein:

Figure 1 is a top view of the hereindescribed tool showing the frame thereof slightly extended through its adjusting means both in width and length. Fig. 2 is a side elevation of the same. Fig. 3 is an end view. Fig. t is a perspective view of one of the chisel blades employed in cutting the walls of the hinge aperture. Fig. 5 is a perspective view of one of the blades employed to cut the side wall of the hinge aperture and the bottom thereof. Fig. 6 is a perspective view of a clamping device employed to hold parts of the frame in adjustment when said frame has been later ally extended. Fig. 7 is a vertical, sectional view showing a lportion of the device, the section being taken upon the line x-a2 of Fig. l.. Fig. 8 illustrates an adjusting screw by means of which the frame may be extended longitudinally.

Referring now more particularly to the drawing wherein like letters of reference designate similar parts inV all the figures,` the letters A, B, C and D denote the co1nponent parts of the frame, all of which parts are similar in construction. As previously stated, this frame is adjustable or extensible bot-h longitudinally and laterally. The longitudinal adjustment is accomplished by dowel pins E and an adjusting screw F. Two of the pins E are threaded in each part A and D, and suitable apertures are provided in the parts B and C into which said pins project. The adjusting screw F is rotatablymounted in the part C and has its extremity threaded in the part B. Longit-udinal motion of this screw is prevented by a small screw G mounted inthe part C transversely of the screw F and entering a groove H in said screw. In order to accomplishthe lateral adjustment of the frame dowel pins J are employed, two of ywhich are threaded in each of the parts C and D, suitable apertures being provided in the parts B and A into which said pins extend. The parts B and A are adapted to slide simultaneously upon the pins J so as to increase or decrease the width of the frame.

In order to maintain any lateral position of adjustment of the frame, clamping devices are provided consisting of screws K, one of which is threaded into each of the parts A and B between the pins J, and clamping blocks L mounted upon said screws and contained in recesses in the parts A and B, which recesses permit said clamping blocks to contact with the pins J, semi-cy lindrical grooves M being providedin said blocks to receive said pins.

When the frame has been laterally adjusted to the desired extent, the two screws K will be tightened upon the blocks L causing said blocks to clamp against the pins J preventing displacement of said pins, and

hence of the parts C and D with which said pins are rigid. In order to cut the side wall of the hinge aperture, a wide chisel N is mounted against one of the inside walls of the frame, grooves being provided vin the parts C and D to receive the ends of the chisel. To eut the side walls of the hinge aperture, a pair of chisels O are mounted perpendicular to the chisel N at each extremity thereof the slot to receive each chisel being formed between the parts B and C and A and D respectively. Each of the chisels N and O is provided with shoulders P which limit the depth of their cut.

In using this device, the under surface R of the frame is intended to rest upon the work and the chisels N and O are of such a length that their blades will extend only a short distance below this surface when the shoulders I contact with the top of the frame. The extent to which the blades of these chisels project below the surface R determines the depth of the hinge aperture which depth will be equal to the width of a hinge, or approximately 2Q; of an inch. A chisel S equal in width to the chisel N is mounted parallel to the surface R with its cutting edge spaced from said surface a distance equal to the dist-ance at which the chisels N and O project when driven down.

The cut taken by the chisel S is limited by shoulders P as in the case of the other chisels. N'Vhen the shoulders contact with the frame the cutting edge of the chisel S will be vertically beneath the cutting edge of the chisel N. extended either laterally or longitudinally, it will be necessary to tap each chisel twice in order to form the hinge aperture, the chisel first being placed against one end of its retaining slot, and then against another.

When this tool has once been adjusted to cut the proper size of hinge aperture, this work can be done more quickly than it can be accomplished by means of an ordinary Ihen the frame has beenv chisel. The tool will be placed with the surfaces R and T abutting against the surface of the door or post in which the aperture is to be cut. Each chisel will then be struck once or twice and measurements will not be necessary to determine the proper width, length and depth of the aperture. The onl 7 measurements required will be to ascertail the distance from the extremity of the doeii or post to the hinge aperture.

What I claim is:

In a wood working tool for cut-ting hinge seats, the combination with a frame comprising a series of sect-ions having angular portions; of an adjusting screw engaged through one of said sections against withdrawal, said screw being threaded into an adjacent section, a pair of dowel pins threaded in each of the other sections and freely slidable in openings in adjacent sections, certain of said sections having restricted slots communicating with the dowel pins, blocks tted in said slots and contacting with certain of said dowel pins, means for holding said blocks in contact therewith, three chisels adjustably mounted in the frame perpendicular to its working surface, and a fourth chisel also adjustably mounted in the frame parallel to said surface with its cutting edge spaced from the cutting edges of the other chisels, said chisels being retained between the sections.

In testimony whereof I have signed my name to this specieation in the presence of two subscribing witnesses.

IVILLIAM E. FRANKLIN.

Witnesses:

J. S. MURRAY, S. R. I-IICKMAN.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents. Washington, D. G. 

